According to our experts, the vitamin C type will also determine its effectiveness. Pure vitamin C, known as L ascorbic acid, ...

This powerful and high-quality vitamin C serum was specifically formulated to target dark spots, signs of aging and more, leaving skin smooth and soft. Glycolic acid, a BHA, provides chemical ...

Despite its efficacy, vitamin C is notoriously unstable and can quickly go from a hyperpigmentation-zapping wonder ingredient to a $60 bottle of smelly serum. That’s why it’s important to find ...